Are there any best practices for commenting in PHP code to maintain a balance between clarity and performance?

When commenting in PHP code, it's important to strike a balance between clarity and performance. One best practice is to use comments to explain the purpose of complex or non-intuitive code sections, while avoiding excessive comments that clutter the code. Additionally, consider using inline comments sparingly and opt for descriptive variable and function names instead. This will help maintain code clarity without sacrificing performance. 

// Calculate the total price of items in the shopping cart
$totalPrice = 0;

foreach ($cartItems as $item) {
    // Calculate the subtotal for each item
    $subtotal = $item['price'] * $item['quantity'];
    
    // Add the subtotal to the total price
    $totalPrice += $subtotal;
}

// Display the total price
echo "Total Price: $" . $totalPrice;

Keywords

commenting PHP code clarity performance balance

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